Photos surfaced on Thursday of Michael Lohan peering inside Lindsay's mouth and it's because the actress had dental surgery and is refusing to take painkillers, Breaking Celebrity News is reporting exclusively.

"Lindsay had tooth surgery this week," a source close to the situation told Breaking Celebrity News.

"She had teeth removed and won't even take any painkillers for the pain."

According to the insider, Lindsay is so dedicated to the rehabilitation of her substance abuse problems she's doing everything she can to stay on track - quite a difference from just 5 months ago when the starlet had her wisdom teeth removed and took the powerful painkiller Dilaudid to deal with the pain.

As Breaking Celebrity News previously reported, Lindsay has been at the Betty Ford Center in Rancho Mirage, Ca